A. Balance the following 3 skeleton equations b. Name the type of reaction for each balanced equation

NaOH + H3PO4 --> Na3PO4 + H2O

type:

b) Fe + O2 → Fe2O3

type:

c) Pb(CO3)2 + AgNO3 →Ag2CO3 + Pb(NO3)4

type:

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

Answercreating graphs and performing calculations;